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Polk Audio db691

6" x 9" 3-way Speakers (Marine Certified) (db 691)

4.7

(37 reviews)

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Exceptional Quality and Versatility

Step up your vehicles audio performance with Polk Audio's revolutionary db691's. Cutting edge technology has allowed for an efficient speaker that has ability to accurately reproduce music like you have never heard before. A precise balance of materials including the Silk/Polymer Dome tweeter and Mica Cone woofer enable smooth roll-off and quick response at any volume. The rubber surround adds to bass response as well as increases the lifetime of the speaker under any conditions. Being marine certified, the Polk db691's will surprise you with its versatility and ability for use in many applications. The high-efficiency loudspeaker means less power is necessary for the same quality output. The revamped db Series delivers that perfect Polk Audio performance and durability like never before.

Speaker Features:

  • 6" x 9" 3-way Speakers (Marine Certified)
  • Power Handling:
    • Peak: 600 watts per pair / 300 watts each
    • RMS: 200 watts per pair / 100 watts each
  • Impedance: 4 ohms
  • Dynamic Balance polymer/mica composite mineral filled cone is stiff yet lightweight for big sound and little distortion
  • 19mm liquid-cooled silk/polymer composite dome tweeter with neodymium magnet for clear and detailed highs
  • Low-mass 2-Layer 25mm Kapton voice coil former is lightweight for high sound output
  • Multi-hole mounting pattern and shallow depth for easy drop-in installations in most cars
  • ABS Grilles, computer optimized and based on exclusive MOMO designs
  • Durable butyl rubber surround won’t fall apart under the stress of extreme temperatures, sunlight or time
  • Pole Plate Heat Sink promotes better heat dissipation for superior power handling and reliability
  • Acoustically inert stamped steel basket
  • Flat Spider for faster, longer excursion linear motion
  • Flexible woven tinsel leads sewn directly into Spider for greater reliability
  • Frequency Response: 35-22,000 Hz
  • 1-year SonicElectronix.com warranty

Priced Per Pair

Product History:
Polk Audio db691 thumbnail
(newest, current model)
Polk Audio db690 thumbnail
(previous model, replaced by Polk Audio db691)
Speaker Specifications
Speaker Size6" x 9"
Design3-way
Tweeter DesignDome
Tweeter CompositionSilk-Polymer Composite
Woofer CompositionPolymer/Mica Composite
Woofer SurroundButyl Rubber
Peak Power Handling300 watts
RMS Power Handling100 watts
Sensitivity93 dB
Frequency Response35 - 22000 Hz
Impedance (Per Voice Coil)4 ohms
Shallow Mount InstallationNo
Top-Mount Depth3-3/16"
Bottom-Mount Depth3-3/4"
Cutout Dimensions8-1/2 x 5-3/4 
Speaker GrillesYes
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration1 year
Labor Warranty Duration1 year
Warranty ProviderSonic Electronix
Customer Review Summary for Polk Audio db691
Average Customer Rating is 4.7 out of 5 stars:
4.7
based on 37 Reviews
Share your thoughts with others:
Rating Distribution:
5 star:
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70%
4 star:
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30%
3 star:
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0%
2 star:
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0%
1 star:
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0%
what's this?
Average Attributes Rating:
Durability
4.7
Value
4.8
Features
4.6
Design
4.6
Usability
4.8
what's this?
Most Helpful Customer Reviews:
June 19, 2011 Polk Audio db691
1 of 1 people found the following review helpful:
Review by
DragonMan from Houston,TX
Overall
Durability
Value
Features
Design
Usability
Great sound and easy to install.
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March 25, 2011 Superb and Well Balanced
1 of 1 people found the following review helpful:
Review by
MegaJaydin from Chattanooga, Tn
Overall
Durability
Value
Features
Design
Usability
The Polks are well balanced with good bass, great mids, and almost to much treble. The sound clarity sometimes makes me jump because the music sounds so real... I think what's that outside and it's actually the speaker producing quality sound. Speaker does need an amp if bass and VoLuMe is desired, otherwise these things almost sound like subs with superb SQ. Still the treble is a little to much when turned up, but can be tuned down. I strongly suggest this speaker to anyone looking for an awesome full range speaker. The only 6x9s that are better are competition series which cost much more. Excellent value!!
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October 31, 2010 GOOD QUALITY
1 of 1 people found the following review helpful:
Review by
wes from OK
Overall
Durability
Value
Features
Design
Usability
Great sound all around, able to handle the power, I would recommend
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February 4, 2010 Good Speaker for the money
1 of 1 people found the following review helpful:
Review by
Travis from Ortonville, MN
Overall
Durability
Value
Features
Design
Usability
I thought these where very nice speakers for the price. Play very loud, loud enough were the tweeters start to hurt your ears. Occasionally they can make a little noticeable mirror shake and its only off of head unit power. Even while pounding on them hard haven't heard much bottoming out. Solid design, easy hook up and look pretty cool to.
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January 17, 2010 Good product
1 of 1 people found the following review helpful:
Review by
mtrwrks from PA
Overall
Durability
Value
Features
Design
Usability
I've always been a fan of Polk as an all around quality speaker, and these speakers maintain the level of quality that I've grown to expect over the years
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View All 37 Reviews for Polk Audio db691
Speaker Wire
Upgrade your factory speaker wire to aftermarket speaker wire and hear the difference! Using thicker gauges, newer technology, and higher quality materials, aftermarket speaker wire is key to upgrading the sound in your car.
 ProductPriceAdd?
20 ft. of 16 AWG KICKER X-Series Speaker Wire20 ft. of 16 AWG KICKER X-Series Speaker Wire
Get high quality sound from Kicker's twisted-pair, true to gauge speaker wire.
$19.99
50 ft. of 14 AWG StreetWires Speaker Cable50 ft. of 14 AWG StreetWires Speaker Cable
Streetwires Super Cable provides a zero-grip insulation for a smooth install as well as true gauge twisted wire construction.
$29.99
50 ft. of 16 Gauge Monster XLN Series Speaker Cable50 ft. of 16 Gauge Monster XLN Series Speaker Cable
Upgrade to clean and clear sound with Monster Cable's Xtra Low Noise (XLN) construction.
$35.00
Sound Dampening Material
Get optimal sound from your new speakers with some high quality sound dampening material. It will keep the road noise out and the music inside the car.
 ProductPriceAdd?
Dynamat Xtreme Speaker KitDynamat Xtreme Speaker Kit
Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!
$21.99
Dynamat Dynaxorb Speaker PakDynamat Dynaxorb Speaker Pak
Revolutionary damping material designed to prevent distortion caused by the back wave of a speaker interfering with the front wave.
$19.99
Dynamat Rubber RollerDynamat Rubber Roller
Install your Dynamat with ease! This heavy duty rubber roller is designed specifically to install your Dynamat products!
$18.99
Ballistic Speaker KitBallistic Speaker Kit
Eliminate speaker distortion, road noise, and rattles with this sound dampening material from Ballistic.
$15.99
Speaker Baffles, Spacers, and Depth Extenders
Mount your speakers in the location that you need with these speaker spacers, extenders, and adapters.
 ProductPriceAdd?
American International 6" x 9" Speaker BafflesAmerican International 6" x 9" Speaker Baffles
Enhance the sound of your speakers with these easy to install speaker baffles.
$4.99
Installation, Tools & Accessories
Get all of the tools and accessories to install your new speakers like a professional, or take your car to an expert and have them installed by redeeming professional installation cards.
 ProductPriceAdd?
Door Panel & Upholstery Remover ToolDoor Panel & Upholstery Remover Tool
The ideal tool for removing your car's door panels to replace you speakers!
$11.99
Universal Window Handle Remover ToolUniversal Window Handle Remover Tool
Designed to easily remove the manual window handles without breaking any interior pieces.
$4.99
Universal Wire Puller & GrabberUniversal Wire Puller & Grabber
Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!
$6.99
16-14 AWG Butt Connectors16-14 AWG Butt Connectors
These blue butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers!
$4.99
Tone Generators and Sound Testing Equipment
Optimize your new system's sound quality by testing and calibrating all of your components with these items.
 ProductPriceAdd?
AutoSound 2000 CD-101AutoSound 2000 CD-101
Low frequency test CD
$12.99
AutoSound 2000 CD-102AutoSound 2000 CD-102
High frequency test CD specifically designed for the set-up and evaluation of sound system imaging and placement.
$12.99
AutoSound 2000 CD-103AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99
Main Product
 ProductPriceAdd?
Polk Audio db691Polk Audio db691$94.95

Product Summary

Manufacturer: Polk Audio
Model number: db691
UPC: 747192112790
Weight: 10.00 lbs
Internal SKU: db691
Internal product ID: 9126

Price Information

$179.99

–$85.04

$94.95

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Customer Testimonial

Fantastic job by you and the others within your company. I have no issues to complain about and would add that each employee acted in a quality manner. I will, most certainly, do business with Sonic again. Thanks, John.

- John from Greenwell Springs, LA

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